In 2002 the Ward Hunt Ice Shelf, which has been in the Arctic for 3,000 years, split in half. (http://www.brighthub.com). The shelf continues to shatter into smaller pieces, which also serve as a natural home for polar bears. If the shelf continues to break up, Arctic polar bears will eventually no longer have a habitat to live in. This will also affect the food they eat. Polar bears usually feed primarily on ringed and bearded seals and whales (http://seaworld.org). It depends on where they are located. A polar bear can absorb about 20% of its weight in food. This only occurs when its energy demands are high. What's interesting is that a polar bear needs to have an average of about 4 pounds of fat per day to get enough energy to survive (http://seaworld.org), that's why they usually seek out ringed seals because they weigh about 120 kilos and this could be enough to hold a polar bear for about eight days. Polar bears have an interesting tactic: they chase ringed seals to their birthing dens. Ringed seal dens are located in caves under snowdrifts near a hole in the ice. Once the polar bear has identified its native den, it slowly positions itself in its vicinity. Once the bear smells or senses a seal in the den, it breaks through the roof and tries to reach the seal. Sometimes this method is not successful because it takes a while to break through the top of the burrow. This method is usually used by the female polar bear and most of the time the seal arrives anyway while the bear is trying to break through the roof (http://seaworld.org). As polar bears' food is becoming scarce, they are forced to travel outside their natural habitat to find food. This is unusual for the polar bear to display this type of behavior. That's why we're noticing polar bears in places where you wouldn't normally see them. The journey of the polar bear in search of food is